1 files changed, 128 insertions, 0 deletions
diff --git a/rkbd/rkbd.cpp b/rkbd/rkbd.cpp
new file mode 100644
index 0000000..62e6fea
--- /dev/null
+++ b/rkbd/rkbd.cpp
@@ -0,0 +1,128 @@
+#include <QtGui>
+#include <iostream>
+#include <time.h>
+
+int keys[] = {
+	Qt::Key_Z, /* prev wep */
+	Qt::Key_X, /* next wep */
+	Qt::Key_Space, /* shoot */
+	Qt::Key_Up,
+	Qt::Key_Left,
+	Qt::Key_Down,
+	Qt::Key_Right,
+	Qt::Key_P,
+	Qt::Key_Backspace,
+};
+
+std::string key_names[] = {
+	"Z",
+	"X",
+	"Space",
+	"Up",
+	"Left",
+	"Down",
+	"Right",
+	"Pause",
+	"Backspace",
+};
+
+#define ARRAY_SIZE(a) (sizeof (a) / sizeof *(a) )
+
+class Application: public QApplication {
+public:
+	Application(int argc, char **argv): QApplication(argc, argv) {
+		setbuf(stdout, NULL); /* disable buffering */
+	}
+	~Application(){}
+	bool notify(QObject *object, QEvent *event) {
+		bool is_pressed = event->type() == QEvent::KeyPress;
+		if (is_pressed || event->type() == QEvent::KeyRelease) {
+			if (handle_key(static_cast<QKeyEvent *>(event)->key(), is_pressed))
+				return true;
+		}
+		return object->event(event);
+	}
+private:
+	bool handle_key(int code, bool is_pressed) {
+		for (unsigned int i=0; i<ARRAY_SIZE(keys); ++i) {
+			if (keys[i] == code) {
+				report_key(i + 1, is_pressed);
+				return true;
+			}
+		}
+		if (code == Qt::Key_Shift) {
+			release_key();
+			return true;
+		}
+		if (code == Qt::Key_Escape) {
+			std::cerr << "Escape received - quitting" << std::endl;
+			quit();
+		}
+		return false;
+	}
+	int getMS() {
+		struct timespec ts;
+		if (clock_gettime(CLOCK_MONOTONIC, &ts)) {
+			perror("clock_gettime");
+			return 0;
+		}
+		return (ts.tv_sec * 1000) + ts.tv_nsec / 1000000;
+	}
+	int last_code;
+	bool last_is_pressed;
+	//int last_time;
+	void release_key() {
+		if (last_code && last_is_pressed) {
+			send_key(last_code, false);
+			last_is_pressed = false;
+		}
+	}
+	bool always_send_key(int key) {
+		if (!key) return false;
+		switch (keys[key - 1]) {
+		case Qt::Key_Up:
+		case Qt::Key_Down:
+		case Qt::Key_Left:
+		case Qt::Key_Right:
+			return false;
+		}
+		return true;
+	}
+	void report_key(int key, bool is_pressed) {
+		//int timestamp = getMS();
+		//bool timed_out = timestamp - last_time >= 300;
+		if (last_code == key && !always_send_key(key)) {
+			if ((is_pressed == last_is_pressed) || 
+				(last_is_pressed && !is_pressed)) {
+				//if (!timed_out) {
+					return;
+				//}
+			}
+		} else {
+			if (!always_send_key(last_code))
+				release_key();
+		}
+		last_code = key;
+		last_is_pressed = is_pressed;
+		//last_time = timestamp;
+
+		send_key(key, is_pressed);
+	}
+	void send_key(int key, bool is_pressed) {
+		printf("%u %u\n", key, is_pressed);
+		if (is_pressed)
+			std::cerr << key_names[key - 1] << " " << (is_pressed ? "pressed" : "released") << std::endl;
+	}
+};
+
+
+int main(int argc, char **argv) {
+	Application app(argc, argv);
+
+	QWidget window;
+	window.resize(250, 150);
+	window.setWindowTitle("Remote keyboard");
+	window.show();
+
+	return app.exec();
+}